# BLOCKED 2026-09-08 (r28 re-test): the r28 tree advanced the DCP+DFlash # boundary logic (fa4720ea) but the drafter still dies — now at # backend selection, not the old C4 assert: the DFlash attention kernel # is BF16-KV-only ("K and V caches must be bfloat16") while the GLM-5.3 # engine runs fp8_ds_mla KV (fork default; no per-drafter dtype override # in this tree) -> "No valid attention backend found ... kv_cache_dtype= # fp8_ds_mla, use_mla=False, block_size=256". Fork-side work: teach # DFlashAttention the fp8_ds_mla KV, or add a drafter bf16-KV override. # # DFlash2 re-test on the r28 full stack (2026-09-08, operator: "maybe it # works now"). The 2026-09-06 blocker (C4 parent-page stride assert + FP8-KV # drafter backend rejection) targeted the r27 tree; r28's vLLM carries # fa4720ea "fix(cache): restore GLM boundaries across DCP and DFlash groups" # + the #646 2048/256 page split, so the geometry may now line up. # Recipe = the r27-dflash2 2x shape (deleted at 17a91a9) retargeted: # method "dflash", incoai/GLM-5.3-Flash-DFlash2 draft, k=7, B12X backend, # block-size 256, 10 GiB KV pin (2x profile). # engine = "vllm" name = "GLM-5.3-Flash NVFP4 (r28 img, DFlash2 k=7, 2x re-test)" docker_image = "jovian-judgement:r28-glm53" # full r28 lock via build_profile build_profile = "r28" docker_image_dir = "jovian-judgement" # Required: the clean r12 image follows the solar contract (ENTRYPOINT [] # + CMD bash), so the recipe carries the entrypoint (the old day-0-based # r12 image had ["vllm","serve"] baked in, which is why this was absent # until the clean rebuild). entrypoint = ["vllm", "serve"] model = "local-inference-lab/GLM-5.3-Flash-NVFP4" parent_model = "zai-org/GLM-5.3-Flash" required_nodes = 2 tensor_parallel_size = 2 pipeline_parallel_size = 1 distributed_backend = "mp" shm_size = "32gb" args = [ # Stable served name — quant-agnostic (shared across glm53 quants) "--served-model-name", "glm53", "--trust-remote-code", "--distributed-executor-backend", "mp", # GMU is ONLY a startup guardrail here (KV pool is pinned below): 0.90 # demands 109.46 GiB free on GB10's 121.63 GiB, but driver reserve + # page cache routinely leave ~108.5 -> flaky # "Free memory ... less than desired" boot deaths (this was the class # of the old "54-second death"), and post-crash reruns see ~106.6 GiB. # 0.82 = 99.7 GiB, below any realistic dip; does NOT change what gets # allocated (weights ~93 + pinned KV 10 + activations). "--gpu-memory-utilization", "0.90", # Pinned 10 GiB KV (≈1.16M tokens) — GMU sizing has no headroom at # 92.72 GiB weights/node; pinning also keeps warmup off the swap path "--kv-cache-memory-bytes", "10737418240", # No --kv-cache-dtype: let the r12 fork pick its default (the explicit # fp8 / fp8_ds_mla both failed auto-selection on this build). # The GLM5Next model wires the B12X sparse-MLA backend (sm_120/sm_121) # when the global backend is B12X (glm5next/nvidia/attention.py: # _select_sparse_backend); the sm12x auto-priority list never offers it # (FLASHINFER_MLA_SPARSE_SM120 only supports head 576, not GLM's 512). "--attention-backend", "B12X", # pure I/O loader (kept across every config; 171 GB in ~5.5 min vs ~16 NFS) "--load-format", "instanttensor", # [R17 FULL-CLUSTER TEST] lil manifest backends (quality gate: hardmode # must stay ≥88; r12-era this cluster dropped it to 74 — r17 may carry # the fix through — one boot decides). "--block-size", "256", # FINAL BISECT (2026-09-03, hardmode 176pt, r17 img): # knobs-only 87: d0 c1 24.1, d8192 23.8 # +moe b12x 88: d0 c1 23.5, d8192 26.6 <- SHIP (2 pts d8192) # +linear b12x 44: W4A4 linear kernel destroys numerics (param-precision 0%) # +align 88: but d0 c1 18.6 (-5) — perf-negative, dropped # (all three together = 44-74; the lab needs its private packed package) "--max-model-len", "524288", "--max-num-seqs", "16", "--max-num-batched-tokens", "4096", "--enable-chunked-prefill", "--async-scheduling", "--enable-prefix-caching", "--disable-custom-all-reduce", # Their proven boot: no flashinfer autotune, no CuTe-DSL warmup "--kernel-config", """ '{"enable_cutedsl_warmup":false,"enable_flashinfer_autotune":false}'""", # Built-in MTP draft, 3 tokens (the r12-qualified "mtp:3" mode — their # x86 numbers: 254 tok/s CC1, 2.37 accept; the checkpoint embeds up to # 5 via the model-mtp-0000x shards but 3 is the verified depth). This is # the checkpoint's own MTP head (Glm5NextMTPModel), NOT dspark — dspark # is the DeepSeek-V4 family's mechanism; GLM's other r12 mode is # dflash2:7 with a separate trained draft checkpoint. # The draft model's vllm_config takes its attention backend from the # SPECULATIVE config, not the global flag (eagle/utils.py: # _make_eagle_draft_vllm_config) — B12X here mirrors the main model's. # r18 used draft_model/FLASH_ATTN/kv auto — both rejected on that fork # (FP8-KV-drafter backend check + C4-page stride assert). r27 qualifies # dflash2 upstream (the #646 2048+256 page split is in this tree); the # drafter/depth follow the working aiden GB10 lane (method "dflash"). "--speculative-config", """ '{"method":"dflash","model":"incoai/GLM-5.3-Flash-DFlash2","num_speculative_tokens":7}'""", "--language-model-only", # MTP + CUDA graphs degrades OUTPUT QUALITY on the glm53 day-0 dev build # (forum #381350/#44, CONFIRMED by A/B bench 2026-08-28: same seed/flags, # graphs on = 89/100, eager = 92/100; decode unchanged 28.4 t/s @ c1, # c2 -7%, TTFT +1.6s). The b12x glm52 stack does NOT need this (its # graphs+MTP combo benches clean at 100/100) — bug is build-specific. # graphs moved BEFORE tool-call-parser; enforce-eager removed for the # r17-graphs test (bisect A2 was 88/100 eager; graphs+MTP fix is public # in r17 refs? verify by bench). "--tool-call-parser", "glm47", "--enable-auto-tool-choice", "--reasoning-parser", "glm45", ] archived = true [env] HF_HUB_OFFLINE = "1" # FlashInfer JIT (mxfp8_gemm_cutlass_sm120, ~12 kernels) compiles at first # boot with 12 parallel nvcc jobs -> OOM-killed (code 137) on GB10's # 121 GB unified while the 93 GB weights + 10 GB KV pin are resident. # MAX_JOBS caps ninja parallelism so the JIT fits in the remaining ~20 GB. MAX_JOBS = "2" # NoPE-MLA rope-pad runtime gate (mod baked into the image) VLLM_MLA_NOPE_PAD_ROPE = "1" VLLM_ENGINE_READY_TIMEOUT_S = "3600" # Upstream launch-script env (memory + compile knobs) PYTORCH_CUDA_ALLOC_CONF = "expandable_segments:True" VLLM_USE_AOT_COMPILE = "0" VLLM_USE_STANDALONE_COMPILE = "1" VLLM_USE_FLASHINFER_SAMPLER = "1" VLLM_USE_BREAKABLE_CUDAGRAPH = "0" TORCH_USE_RTLD_GLOBAL = "1" VLLM_NO_USAGE_STATS = "1" # Architecture (aarch64 / sm_121a DGX Spark) TORCH_CUDA_ARCH_LIST = "12.1a" FLASHINFER_CUDA_ARCH_LIST = "12.1f" CUTE_DSL_ARCH = "sm_121a" CMAKE_CUDA_ARCHITECTURES = "121" OMP_NUM_THREADS = "2" [[extra_mounts]] host = "~/sm121-cache/glm53-jit-121f/b12x" container = "/root/.cache/b12x" # JIT caches persist per-node across serves (was: cold /root/.cache per # container -> ~20 min flashinfer/torch recompile every serve). The host # dirs are shared between lanes of the same arch — each cache # self-namespaces by its engine version key internally. [[extra_mounts]] host = "~/sm121-cache/jit-121f/flashinfer" container = "/root/.cache/flashinfer" [[extra_mounts]] host = "~/sm121-cache/jit-121f/torchinductor" container = "/root/.cache/torchinductor" [[extra_mounts]] host = "~/sm121-cache/jit-121f/vllm" container = "/root/.cache/vllm"